MiTek Posi-Joist designer and manufacturer in Hampshire. Free joist design, structural calcs for building control and delivery across England and Wales.
Posi-joists & Engineered Timber Solutions
Services
What We Offer
Hampshire Engineered Timber Solutions (HETS) designs and manufactures Posi-Joists, Posi-Rafters and floor and roof cassettes at our factory in Swanmore, Hampshire. As a licensed MiTek Posi-Joist manufacturer, we handle your floor or roof from first sketch to delivery: free design, layout drawings, structural calculations, manufacture, and all the hangers, straps and fixings to go with it.
Send us your drawings, or even a basic sketch, and our design team will do the rest.
POSI-Joists
Posi-Joists are an engineered solution as an alternative to traditional mass timber joists in the floors and roof zones of buildings.
Posi-Joist combines the lightness of timber with the strength of the Posi-Strut steel web to produce a floor and roof system allowing you to span far greater distances than would be possible with alternative timber products.
POSI-Rafters
As with Posi-Joist floor joists they are designed and manufactured offsite and tailored to the requirements of each individual project.
Posi-Rafters are suitable for both pitched roofs and flat roofs. They are stronger than solid timber rafters, therefore can span further and require less internal support.
Floor & Roof Cassettes
Combining the benefits of POSI-Joists and Rafter elements into one pre-formed cassette delivered direct to site ready to be lifted into place, saving both time and site labour.
See Our Customer Reviews
Our customers
Who We Work With
Self-builders
We talk you through every step, from design to the fixings on site.
Builders & contractors
Accurate designs, clear labelling and joists ready when your site is.
Timber frame companies
Posi-Joists, Posi-Rafters and cassettes that fit your frame design, with IFC export for BIM.
Architects, engineers & developers
Project-specific designs and calculations ready for building control.
METAL WEB JOISTS
ABOUT POSI-JOISTS
Posi-Joist combines the lightness of timber with the strength of the Posi-Strut steel web to produce a floor and roof system allowing you to span far greater distances than would be possible with alternative timber products.
This gives you unequalled design freedom across a wide range of applications for both floor and roof in domestic, industrial and commercial applications. The Posi-Joist allows a variety of internal room layouts within an external shell due to its clear spanning capabilities.
Easy access for the installation and maintenance of services in the floor zone is the clear advantage of the Posi-Joist system, and with the ever increasing need for MVHR (Mechanical Ventilation and Heat Recovery) systems, Posi-Joist provides a perfect and simple solution that just isn’t possible with alternative solid timber products.
New to Posi-Joists? Read our complete Posi-Joist guide for spans, sizes, costs and Building Regulations.
Our promise
Why Choose HETS
Licensed MiTek manufacturer
Genuine Posi-Joists, designed with MiTek’s industry-leading software.
Free design, every time
In-house design and structural calcs for building control at no extra cost.
See it before it’s made
A free interactive 3D model of your floor or roof.
Services made easy
The open steel web lets pipes, cables and MVHR ducts run straight through, with no notching or drilling.
Joists and metalwork together
Hangers, straps and strongbacks designed alongside your joists, and available from our online shop.
Clear labelling
Every joist marked for top, left and right ends to cut fitting errors on site.
Sustainable timber
Sourced under PEFC chain of custody.
Visit us
You’re welcome to see the factory in Swanmore. Visits are by appointment only, 10am to 4pm, Monday to Friday, so please get in touch to book a time.
Step by step
How It Works
1. Send us your plans
Drawings, sketches or just your dimensions. We aim to turn quotes around within a week.
2. Free design and 3D model
Our in-house team designs your floor or roof and sends you layout drawings, structural calculations and a free interactive 3D model you can open in any web browser.
3. Approve your design
Check the layout with your builder, plumber and electrician before anything is made.
4. Manufacture and delivery
We make your joists in our Hampshire factory, label every joist clearly, and deliver or have them ready for collection. If your site isn’t ready, we can store them for you.
Whats the Maximum Span I can Have?
Try our Posi-Joist Span Calculator to find your maximum clear span of any joist design. This tool is just a guide to get you started! Contact our design team for a free design and quote
we need to know your floor joist zone
Or enter your length to check the clear span
FAQs
Quick Answers
Do you charge for design?
No. Every quote includes a free Posi-Joist design and the structural calculations you need for building control.
What is your lead time?
Our standard lead time is 15–20 days from design approval. Faster 5-day and 48-hour services are available for an additional fee.
Where do you deliver?
Across England and Wales, from our factory in Swanmore, Hampshire.
Do I need a structural engineer?
Not for your joists. We design them and provide the calculations for building control.
Can I buy joists online?
Yes. Selected off-the-shelf Posi-Joists, hangers and fixings are available from our online shop at shop.hets.uk.
Ready to find out more? Contact our design team for a free quote and interactive 3D design.
Hampshire Engineered Timber Solutions are a MiTek Posi-Joist designer and benefit from the very latest industry leading design software. With this specialist software we are able to create your project specific design. Detailed output drawings are provided for approval and manufacture, but it is the 3D viewer tools that really separates Posi-Joist from the rest.
Designs are shared via a free cloud based 3D viewing platform, allowing for a fully interactive 3D model of the floor or roof to be viewed on any internet enabled device. No apps are required, you will be sent a link to your model and simply click it to view in your browser.
Pricing
Our Pricing
All joists are specifically designed to your requirements and tailored to your scheme, Send us a set of drawings or even basic sketches and we can do the rest.
We also offer a range or pre-designed POSI-joists which can be purchased and ready for collection in only 2 days.
POSI-Joists
from £25.37
(Ex. VAT)
POSI-Rafters
£POA
(Ex. VAT)
Delivery
Where We Deliver
We are based at Hill Farm Yard, Droxford Road, Swanmore, SO32 2PY, just north of Portsmouth and Southampton. We deliver across England and Wales, and can sometimes go further – just ask. See the areas we cover and our delivery prices.